| 引用本文: | 王乐,武岳,薛鹏,孙宝华,孟松.考虑蒙皮效应的雷达罩结构受力性能试验[J].哈尔滨工业大学学报,2020,52(8):176.DOI:10.11918/201905108 |
| WANG Le,WU Yue,XUE Peng,SUN Baohua,MENG Song.Mechanical performance test of radome structure considering diaphragm effect[J].Journal of Harbin Institute of Technology,2020,52(8):176.DOI:10.11918/201905108 |
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| 考虑蒙皮效应的雷达罩结构受力性能试验 |
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王乐1,2,武岳1,2,薛鹏1,2,孙宝华3,孟松3
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(1.结构工程灾变与控制教育部重点实验室(哈尔滨工业大学),哈尔滨 150090; 2.哈尔滨工业大学 土木工程学院,哈尔滨 150090;3.哈尔滨哈玻拓普复合材料有限公司,哈尔滨 150030)
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| 摘要: |
| 为研究蒙皮对雷达罩铝合金骨架整体稳定性能的影响,针对一跨度5.8 m,矢高4.3 m的雷达罩进行了静力加载试验研究,采用自行设计的多级分配梁加载体系对雷达罩进行多点同步分级加载,分别考虑了全部覆盖蒙皮、部分覆盖蒙皮和纯骨架3种工况.试验结果表明:由于蒙皮对铝合金构件起到侧向支撑作用,避免了构件过早产生绕弱轴的弹性失稳,从而使结构整体稳定承载力显著提升；即便是在少量蒙皮单元缺失的情况下,结构整体稳定承载力仍较纯骨架工况高很多.因此在进行此类结构设计时,应考虑蒙皮与骨架的协同工作性能,可更好地解决结构安全性与电磁透明性的难题. |
| 关键词: 雷达罩 铝合金结构 膜结构 蒙皮效应 静力试验 |
| DOI：10.11918/201905108 |
| 分类号:TU317.1 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(51778182) |
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| Mechanical performance test of radome structure considering diaphragm effect |
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WANG Le1,2,WU Yue1,2,XUE Peng1,2,SUN Baohua3,MENG Song3
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(1.Key Lab of Structures Dynamic Behavior and Control (Harbin Institute of Technology), Ministry of Education, Harbin 150090, China; 2.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; 3.Harbin Topfrp Composite Co. Ltd., Harbin 150030, China)
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| Abstract: |
| To study the influence of stressed skin on the global stability of aluminum alloy frame of radome structure, a static loading test was conducted on a radome which has a span of 5.8 m and a height of 4.3 m. A self-designed multi-stage distribution beam loading system was applied to the structure, and simultaneous multi-stage loading was realized on the structure at multiple points. Three load cases, i.e., completely covering skins, partially covering skins, and framework, were discussed respectively. Test results show that due to the lateral bracing of the stressed skin on the aluminum alloy members, the prematurely elastic instability of the members around the weak axis was avoided, which significantly improved the global stability bearing capacity of the structure. When a small amount of stressed skin was destroyed, the global stability bearing capacity was still much higher than that for the framework case. Therefore, in the design of such radomes, the cooperative performance of the stressed skin and the frame should be considered to solve the problems of structural safety and electromagnetic transparency. |
| Key words: radome aluminum alloy structure membrane structure diaphragm effect static loading test |
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